VFD, Teco vs Fuji???

[chemando]

Need to purchase a VFD for a fractional HP motor. 115 V single phase in, 230 V three phase out. Hoping to control down to 6 HZ.

Looking at either the Teco JNEV or the Fuji Frenic Mini. Both are priced the same. Any advantage to either of them in features or quality?

The JNEV is sensorless vector but I can't find much info on the Frenic and im not sure if its sensorless vector.

 

[79firebird]

fuji one is junk. tryed it on my works paint booth and died the next day. got a replacment lasted one day. We now have a hitachi vfd and its been 2 weeks no probs yet.

 

[tdkkart]

I've had several Teco's with good luck, I'd buy another today if i needed it.

I think getting down to 6hz is a stretch though........

 

[alfredeneuman]

I've had great success with the Hitachis, and have installed quite a few of them.

I've bought mine from www.driveswarehouse.com
In an emergency, I've used their optional shipping and the units have been delivered the next day.

 

[ddawg16]

If price is an issue, have a look at Automation Direct.

Also...if your price range is around $400....Allen Bradley Powerflex series is a rock solid choice

 

[rockwithjason]

I agree with the powerflex statement. powerflex is all we use at the plant and for good reason.

 

[chemando]

I've had several Teco's with good luck, I'd buy another today if i needed it.

I think getting down to 6hz is a stretch though........

Any thoughts on a practical lower limit? 10 hz, 15 hz? I don't have any previous experience with VFDs so my knowledge is limited to what I have read on forums.

 

[chemando]

If price is an issue, have a look at Automation Direct.

Also...if your price range is around $400....Allen Bradley Powerflex series is a rock solid choice

Thanks, I will take a look a these but im not sure if I wills strecth my budget that far. The Teco is in the ~$225 range.

 

[justanengineer]

Any thoughts on a practical lower limit? 10 hz, 15 hz? I don't have any previous experience with VFDs so my knowledge is limited to what I have read on forums.

I'll go down to 30-40 hz on my old machine tools, but those are vintage motors with cheap VFDs. On newer motors not owned by me personally, Id probably go down to ~20Hz but below that the motor's going to heat up pretty good and youre going to lose power.

 

[Falcon67]

I run a Teco on the mill and I've had it down to 20 hz and up as high as 80 hz. Worked OK but I don't go there unless I really really need to. And over time, I hasn't moved off 60 more than a couple of times.

 

[bsaint]

FUJI isnt that bad. If it fails then its because your parameters are wrong.

FUJI is used on older Fanuc resonators.